Multiple choice

Which of the following is the best estimate of the number of stars in a typical galaxy?

  1. Hundreds

  2. Millions

  3. Thousands

  4. Billions

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A typical galaxy, such as our Milky Way, contains anywhere from tens of billions to hundreds of billions of stars. Dwarf galaxies may have hundreds of millions, while giant galaxies can have trillions, making 'billions' the best general estimate.